Aresearcher discovered a species of moth that lays its eggs on oak trees. eggs are laid at two distinct times of the year:
a. early in spring when the oak trees are flowering and in midsummer when flowering is past.
b. caterpillars from eggs that hatch in spring feed on oak flowers and look like oak flowers.
c. but caterpillars that hatch in summer feed on oak leaves and look like oak twigs

c

explanation:

a- all cells come from pre-existing cells

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.